Movie 1

A time-lapse movie showing the heart closure from Hand-GFP; Eme>H2B expressing embryo. Visible are the cardioblasts (green) and EPCs (yellow) with their migratory paths (lines). The OHC EPCs stay associated with the cardioblasts and migrate toward the dorsal midline, whereas the WH EPCs detach from the heart field and move anteriorly.